VMS Help CMS, DELETE, ELEMENT, Restrictions  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    o  You cannot delete an element that belongs to a group or has a
       generation in a class.

    o  You cannot delete an element that has a generation reserved.

    o  You cannot restore a deleted element.

    o  You cannot delete an element that has a generation under
       review.